SAN FRANCISCO (AP) -- The pilot of the empty oil tanker that grazed the San Francisco-Oakland Bay Bridge had three minor shipping mishaps previously.

California Board of Pilot Commissioners records show that pilot Guy Kleess was at fault for two of the accidents. In one, a dock in the Port of Stockton was damaged in 2009. In the other, a tugboat tending to his ship briefly grounded in the Port of Richmond in 2010.

Kleess was held blameless in a third accident when a ship he was piloting briefly grounded in the Sacramento River.

A call to Kleess' San Francisco home Tuesday went unanswered.

Board chief Allen Garfinkle said both previous mishaps blamed on Kleess were considered minor and that the pilot is held in high regard.